Blower Motor Resistor (Manual Temperature Control) Connector End View

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

RESISTOR-BLOWER MOTOR (MTC) - BLACK 4 WAY

Courtesy of DAIMLERCHRYSLER CORP.
CAV	CIRCUIT	FUNCTION
A	C73 12GY/LG	BLOWER M2 SPEED
B	C72 12OR/LG	BLOWER M1 SPEED
C	C71 20RD/LG	BLOWER LOW SPEED
D	C74 12LB	BLOWER HIGH SPEED